DNS resolvers
Quad9
Quad9 is the Swiss non-profit no-account public resolver with malware-domain blocking on by default.
- Website
- quad9.net
- KYC
- no KYC — Free public resolver; no account required.
- Status
- active
- Fiat on-ramp
- no
- Payment
- —
- Jurisdiction
- Switzerland (operator-disclosed, non-profit)
- Founded
- 2016
- Open source
- no
- Custodial
- no
- Last verified
- Sources
- 2
Overview
What Quad9 is#
A Swiss non-profit free public DNS resolver.
Threat-model fit#
Default no-account resolver, with built-in threat-domain blocking.
Strengths
- Swiss non-profit operator.
- Blocks known-malicious domains using shared threat-intel feeds.
- DoH/DoT supported; anycast deployment.
Caveats
- Threat-intel blocking can flag false positives.
- Single-trust-anchor operator model.
- Facts need re-verification by operator (last seeded 2026-01).
Verdict
Quad9 is the Swiss non-profit no-account public resolver with malware-domain blocking on by default. A good complement to Mullvad DNS as a second option; pick based on whether you want the threat-intel blocking.
FAQ
- Does Quad9 require KYC?
- As of Jan 1, 2026, Quad9 does not require KYC for normal use. Free public resolver; no account required.
- What payment methods does Quad9 accept?
- Payment methods are unspecified in our entry as of Jan 1, 2026.
- Where is Quad9 based?
- Operating jurisdiction listed as Switzerland (operator-disclosed, non-profit). This is best-known information; corporate structure can be opaque.
Sources
- Quad9 about · accessed
- Quad9 privacy · accessed
Mentioned in
Quick answers
Alternatives to Quad9
- AdGuard DNS optional kyc · Cyprus
- ControlD optional kyc · Canada
- Mullvad DNS none kyc · Sweden
- NextDNS optional kyc · France
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